Book Image

Visual Basic Quickstart Guide

By : Aspen Olmsted
Book Image

Visual Basic Quickstart Guide

By: Aspen Olmsted

Overview of this book

Whether you’re an absolute beginner or an experienced developer looking to learn the Visual Basic language, this book takes a hands-on approach to guide you through the process. From the very first chapters, you'll delve into writing programs, exploring core concepts such as data types, decision branching, and iteration. Additionally, you’ll get to grips with working with data structures, file I/O, and essential object-oriented principles like inheritance and polymorphism. This book goes beyond the basics to equip you with the skills to read and write code across the entire VB family, spanning VB Script, VBA, VB Classic, and VB.NET, enabling you to handle legacy code maintenance with ease. With clear explanations, practical examples, and hands-on exercises, this book empowers you to tackle real-world software development tasks, whether you're enhancing existing projects or embarking on new ones. It addresses common challenges like distinguishing between the variations of the VB programming language to help you choose the right one for your projects. Don't let VB's extensive legacy daunt you; embrace it with this comprehensive guide that equips you with practical, up-to-date coding skills to overcome the challenges presented by Visual Basic's rich history of over two decades.
Table of Contents (27 chapters)
Free Chapter
1
Part 1:Visual Basic Programming and Scripting
9
Part 2:Visual Basic Files and Data Structures
14
Part 3:Object-Oriented Visual Basic
20
Part 4:Server-Side Development

Choosing data types

Programming languages typically support several data types that can be used to represent different kinds of values. Here are some common data types in programming languages:

  • Integer: This data type represents whole numbers, both positive and negative
  • Float or Double: This data type represents decimal numbers, also called floating-point numbers
  • Boolean: This data type represents a logical value, either true or false
  • Character: This data type represents a single character or letter, such as a or b
  • String: This data type represents a sequence of characters, such as a word or a sentence
  • Array: This data type represents a collection of elements of the same data type stored in a contiguous memory block
  • Pointer: This data type represents a memory address, which can be used to access data stored elsewhere in memory
  • Struct or Class: This data type represents a composite data type that can store multiple data types
  • Enumerated: This...